diff --git a/bible-local/02-architecture.md b/bible-local/02-architecture.md
index bd24cc6..cc3b67e 100644
--- a/bible-local/02-architecture.md
+++ b/bible-local/02-architecture.md
@@ -40,14 +40,25 @@ Readiness guard:
 
 ## Pricing contract
 
-Prices come only from `local_pricelist_items`.
+`local_pricelist_items` is the single source of truth for both prices and component catalog (lot_name + lot_category). There is no separate component catalog table.
 
 Rules:
-- `local_components` is metadata-only;
-- quote calculation must not read prices from components;
+- `local_components` table has been removed; do not recreate it;
+- component list for the configurator autocomplete comes from `local_pricelist_items` via `ListComponents`;
+- quote calculation reads prices from `local_pricelist_items` only;
 - latest pricelist selection ignores snapshots without items;
 - auto pricelist mode stays auto and must not be persisted as an explicit resolved ID.
 
+## lot_name case handling
+
+lot_names in `local_pricelist_items` may be stored in mixed case in databases synced before normalization was enforced. `NormalizeLotName` (uppercase + trim) is applied at sync time via `PricelistItemToLocal`, but existing rows are not retroactively updated.
+
+Rules:
+- all SQLite queries that filter by `lot_name` must use `UPPER(lot_name) IN ?` or `UPPER(lot_name) = ?` with an uppercased input — never a bare `=` or `IN` on a string that may have been sourced from user input or a legacy row;
+- result map keys must preserve the original case passed by the caller (build a `uppercase → original` index before the query);
+- `GetLocalPricesForLots` is the canonical pattern: it uppercases the input list, queries with `UPPER(lot_name) IN ?`, and returns keys that match the input lot_names;
+- frontend JS must never infer a component category from the lot_name prefix; `lot_category` from `local_pricelist_items` is the only valid source; items without a category fall into the "Other" tab.
+
 ## Pricing tab layout
 
 The Pricing tab (Ценообразование) has two tables: Buy (Цена покупки) and Sale (Цена продажи).
@@ -133,7 +144,7 @@ full contract and JSON schemas.
 | `required_categories` | Per-config-type badge on tabs with unfilled required categories |
 
 Rules:
-- sync runs after `SyncComponents`; failure is non-fatal (Warn log only);
+- sync runs as part of the pricelist pull; failure is non-fatal (Warn log only);
 - `local_qt_settings` is a read-only cache — never written by user actions;
 - absent or unparseable settings: QF uses hardcoded fallbacks for that key only;
 - `config_types[].categories` is an allowlist: a category absent from all types is shown everywhere;
diff --git a/bible-local/03-database.md b/bible-local/03-database.md
index 2da1dd7..e082b37 100644
--- a/bible-local/03-database.md
+++ b/bible-local/03-database.md
@@ -8,9 +8,8 @@ Main tables:
 
 | Table | Purpose |
 | --- | --- |
-| `local_components` | synced component metadata |
 | `local_pricelists` | local pricelist headers |
-| `local_pricelist_items` | local pricelist rows, the only runtime price source |
+| `local_pricelist_items` | pricelist rows; the only runtime source of prices and component catalog |
 | `local_projects` | user projects |
 | `local_configurations` | user configurations |
 | `local_configuration_versions` | immutable revision snapshots |
@@ -25,8 +24,9 @@ Main tables:
 Rules:
 - cache tables may be rebuilt if local migration recovery requires it;
 - user-authored tables must not be dropped as a recovery shortcut;
-- `local_pricelist_items` is the only valid runtime source of prices;
-- configuration `items` and `vendor_spec` are stored as JSON payloads inside configuration rows.
+- `local_pricelist_items` is the only valid runtime source of prices and component catalog; do not add a separate component cache table;
+- configuration `items` and `vendor_spec` are stored as JSON payloads inside configuration rows;
+- `local_components` table has been removed; any reference to it is dead code.
 
 ## MariaDB